Bannockburn students won prizes for correctly guessing for how many plastic bottles go unrecycled at the school every day. | Photos courtesy of Caroline Shapiro

Bannockburn third-graders display "greenraising" products, including a wallet made from bike tubes and“Kozy” reusable, washable wraps that replace baggies. | Photos courtesy of Caroline Shapiro

Bannockburn students saved hundreds of plastic baggies from the garbage as part of the school's "Baggies and Bottles" contest. Instead, students were encouraged to use “Kozy” wraps, an eco-friendly alternative to plastic bags. | Photos courtesy of Carolin

Bannockburn School students participated in a “Baggies and Bottles” contest. | Photos courtesy of Caroline Shapiro